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         Internet Search Results 

xkcd: Telescopes: Refractor vs Reflector
This work is licensed under a Creative Commons Attribution-NonCommercial 2.5 License. This means you're free to copy and share these comics (but not to sell them).

Refractor Telescopes. Reviews of the best refractor ...
Reviews of the best refractor telescopes for the amateur and hobby astronomer. What is a refractor telescope? History of refractor telescopes. Where to use a ...

Telescopes - Astronomy Notes
Types of Telescopes Chapter index in this window — — Chapter index in separate window-- Please support this website This material (including images) is copyrighted!

Tele Vue Ranger Refractor Telescope | eBay
Find great deals for Tele Vue Ranger Refractor Telescope. Shop with confidence on eBay!

Celestron Telescopes SALE Refractor & Reflector Telescopes
Celestron Telescopes are known throughout the world for their incredible performance & innovative design.

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Southern Refractories, Inc. is an independent refractory contractor and distributor founded in 1974. The company is manned and equipped to provide a wide range of ...

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Refractories Plus is a high temperature refractory and insulation supplier in Hamilton, Ontario, Canada. Over 25 Years of refractory experience.

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Monolithic Refractories Limited. Drummau Farm. Drummau Road. Skewen, Neath Port Talbot. SA10 6NW

The Refractories Institute
The Refractories Institute (TRI) is a trade association offering educational resources, networking events and industry news and trends to its members.




    * Latest Astronomy in the News * 



Southern Newsroom

SU Professor Mark Bottorff Traveled to Wyoming to Experience “Sublime, Metaphysical” Total Solar Eclipse
Southern Newsroom
It was this very same telescope, nicknamed “Long Tom” (a classic 4 inch in diameter long focus refractor) and “Piglet” (a short focus wide field refractor made from a WWII-era aerial camera lens that accompanied him to Washington state in 1979 to watch ...


Looking Up: Something Old, Something New...
This very small dwarf galaxy only has about 10 million stars. It was discovered by, can you guess? E.E. Barnard in 1884, using only a six inch refractor telescope. And this little gem is high in the southern Colorado sky right now. What makes it so ...

Nidek launches tabletop refraction system
Nidek Co. has launched a new tabletop subjective refraction system in the U.S., the company announced. The TS-310 integrates the chart and refractor into a single unit, reducing the instrument's footprint, according to a press release from Nidek. The ...

Best Telescopes
A. In a nutshell, refractor telescopes may be a better choice for those new to astronomy. Refractors are sealed at both ends, which means they require very little maintenance. Reflector telescopes have an open end; you must keep the interior clean of ...

Seattle Design Nerds are making the city a little more awesome
Another one is the Refractor, which sits in a suitcase, but inflates to make a big impression. "It was on the waterfront, I think we took it to Georgetown," he said. "It went to Austin, Texas for a little bit." The AR (augmented reality) Sandbox allwos ...

Tribeca Citizen

In the News: Taco Bell Expansion
Tribeca Citizen
... former president of the Amateur Astronomers Association of New York, who will offer the use of two high-tech telescopes, a Celestron reflector and Tele Vue refractor.” For what it's worth, 50 West is the 26th tallest building in the city, according ...

Edmonton Journal

Edmonton astronomy buffs take a shine to solar eclipse
Edmonton Journal
Looking directly at the sun during an eclipse can cause permanent eye damage. In the observatory, people peeked through five telescopes, including the hydrogen alpha refractor, which reveals a red-tinged sun's flares and sunspots in higher detail.

and more »

The Australian

Out of this world: Astronomy Photographer of the Year winners announced
The Australian
TEC140 140 mm f/7 refractor telescope at f/9.8, Solarscope DSF100 H-alpha filter, Sky-Watcher EQ6 Pro mount, PGR Grasshopper 3 camera, stacked from multiple exposures. Insight Astronomy Photographer of the Year 2017- Our Sun: Eric Toops (USA) with ...

Valley Advocate

Hidden Figures in the Silent Sky
Valley Advocate
“They were not allowed to even touch the Great Refractor telescope,” Freedman says, as they served a famous male astronomer who called their work “girl hours” and took credit for it. The play focuses on Henrietta Swan Leavitt, played by Myka Plunkett ...


Astronomers resolve mystery of white dwarf's mass
Utilizing a technique called "speckle interferometry," Dr. Mason and his colleagues observed 40 Eridani BC over the course of six nights in early 2017 using the USNO's 66-cm (26-inch) "Great Equatorial" refractor telescope, purchased in 1873. The lens ...

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